Do you have anything to ____ for customs?[ ]
A. show
B. declare
C. exam
D. check
答案:B
—The guard keeps watch at the gate.
—So he does. Only those knows well could be let in.
A.close; who
B.tight; whom
C.tight; that
D.close; he
下列哪一个不属于故障的主要类型
A.事务故障
B.逻辑故障
C.系统故障
D.磁盘故障